We don’t want to be judgmental towards those that sin so we tend to avoid talking about it. But we should be judgmental towards sin. It is wrong and it defiles everything around it.
In Corinthians it says, “Do you not know that you are the temple of God and that the Spirit of God dwells in you? If anyone defiles the temple of God, God will destroy him. For the temple of God is holy, which temple you are” 1 Corinthians 3:16-17 (NKJV).
If we are Christians then the spirit of God dwells in us. God expects us to take care of his temple.